by plane :
Perpignan - Rivesaltes / airport
Carcassonne / airport
http://www.ryanair.com

by train :
Salses le Château station
http://www.voyages-sncf.com/

by car :
A9 La Languedocienne exit Perpignan nord 41: direction CHATEAU DE SALSES ou RN 9 towards the centre of SALSES LE CHATEAU then the direction of OPOUL